Basil of Caesarea

So likewise should we set about even the lowest works with the greatest zeal and affection, knowing that whatever is done with God before our eyes is not slight, but meet for the kingdom of heaven.

Catena Aurea by Aquinas ↗

Cyril of Alexandria

Those men who were directed, when they were loosing the colt, did not use their own words, but spoke as Jesus had told them, that you may know that not by their own words, but the word of God, not in their own name but in Christ's, they implanted the faith among the Gentile nations; and by the command of God the hostile powers ceased, which claimed to themselves the obedience of the Gentiles.

Catena Aurea by Aquinas ↗

Bede

But they who were sent went away and found the colt standing, as he had told them. Mark writes that the colt was found tied at the door outside, in the street. Now the door itself is He who says: I am the door of the sheep; by me, if any man enter in, he shall be saved, and shall go in and out, and find pasture (John X). From which pastures of life this colt, that is, the people of the Gentiles, was lacking when it still stood tied outside this door in the street. …

On the Gospel of Luke ↗

Bonaventure

And those who had been sent went away, etc. After he has manifested the royal power in Christ through excellence in commanding, here secondly he manifests it through the obedience of the disciples in complying. In explaining this, there is shown in the disciples the perfection of obedience in going, carrying out, and returning. First, therefore, as regards the obedience of the disciples going forth by command, it is said: And they that were sent went their way and found, even as he had said unto them, the colt standing. …

Commentary on Luke, Chapter 19 ↗